Keyboard



FIG. 1 is a perspective view of a keyboard showing our new design;

FIG. 2 is a top view;

FIG. 3 is a front view;

FIG. 4 is a rear view;

FIG. 5 is a bottom view;

FIG. 6 is a right hand side view; and,

FIG. 7 is a left side view.

The broken lines shown in FIGS. 1, 2 and 4 are illustrative purposesonly and form no part of the claimed design.

The ornamental design for a keyboard, as shown and described.